Gui, Margin, 0, 0

Gui, Add, Text, x10 y10 h25 w100 gtab, tab1
Gui, Add, Progress, x10 y10 h25 w100 Background9999FF vp1
Gui, Add, Text, BackgroundTrans xp+5 yp h25 w100 0x200, Tab1

Gui, Add, Text, x110 y10 h25 w100 gtab, tab2
Gui, Add, Progress, x110 y10 h25 w100 Background9999AA vp2
Gui, Add, Text, BackgroundTrans xp+5 yp h25 w100 0x200, Tab2

;Gui, Add, Progress, x10 y35 h200 w300 Background9999AA vpmain

lele := new tabs(10, 10)

Gui, Show, w500 h500
return

tab:

	color := strSplit(A_GuiControl, "tab")[2] == 1 ? 0x9999FF : 0x9999AA

	GuiControl, +background%color%, % lele.hwnd
return

class tabs {

	__New(sx, sy){

		th := 25
		tw := 100

		Gui, Add, Progress, % "x" sx " y" sy+th " h200 w300 Background9999AA hwndHwnd"

		this.hwnd := hwnd
	}

	class tab {

		__New(){

			Gui, Add, Text,
			Gui, Add, Progress,
			Gui, Add, Text
		}
	}
}